Atypical family of four uses 400 gallons of water each day and 30% of this water is for outdoor activities such as gardening how many gallons of water does a typical family of four use each day for outdoor activities?

Step-by-step explanation:

A typical family of four uses 400 gallons of water each day and 30% of this water is for outdoor activities such as gardening. To determine the number of gallons of water that a typical family of four use each day for outdoor activities,

We will divide 30% by 100% and multiply by the total amount used each day. It becomes

30/100 × 400 = 0.3× 400 = 120

The family uses 120 gallons of water each day for outdoor activities

b.an increase in a causes b to decrease

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.